<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <style>
    .outer {
      height: 100px;
      position: relative;
      text-align: center;
    }
    .left {
      height: 100%;
      width: 100px;
      position: absolute;
      background-color: #2aabd2;
    }
    .right {
      height: 100px;
      margin-left: 200px;
      background-color: #1b6d85;
    }
  </style>
</head>
<body>
<div class="outer">
  <div class="left">左边</div>
  <div class="right">右边</div>
</div>
</body>
</html>
